03/25/20

A 3 kg box rests on a ramp with a slope of 60 degrees. Find the normal force acting on the box.
Follows • 1
Expert Answers •2

03/23/20

A car starts from a speed of 18 m/s with a acceleration of5 m/s^2. Find the time neede for the car to reach 33 m/s
Follows • 1
Expert Answers •1

03/20/20

Snells law and EM wave properties

1.What is the index of refraction of a refractive medium if the angle of incidence in air (n=1.0003) is 87 degrees and the angle of refraction is 5 degrees?2.What is the critical angle for the... more
Follows • 2
Expert Answers •1

03/20/20

Snell law and EM wave properties
1.What is the speed of light through an unknown glass with an index of refraction of 1.6?2.A flashlight beam strikes the surface of a pane of glass (n = 1.02) at a 70° angle to the normal. What is... more
Follows • 2
Expert Answers •1

03/20/20

Physics Magnetic field

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. Suppose the magnetic... more
Follows • 1
Expert Answers •1

03/20/20

Protons in magnetic fields
A beam of protons is directed in a straight line along the +z direction through a region of space in which there are crossed electric and magnetic fields. The electric field is 500 V/m in the -y... more
Follows • 1
Expert Answers •1

03/20/20

physics magnetic force
An electron moves with a velocity of 107 m/s in the x-y plane at an angle of 45∘ to both the +x and +y axes. There is a magnetic field of 3.5 T in the +y direction.Determine the magnitude of the... more
Follows • 1
Expert Answers •1

03/18/20

Math: simplifying
Simplify, if known x<y(2|x-y|-|y-x|)/(x^2 + y^2 -2xy)
Follows • 1
Expert Answers •1

03/18/20

Evaluate the exponential function f(x)=20^x
f(3)= ______f(−2)=______f(12)________
Follows • 2
Expert Answers •1

03/18/20

Which of the following are equivalent exponential function(s) to f(x)=(5/2)^-x
Follows • 1
Expert Answers •1

03/17/20

light bulb A is half as bright as light bulb B. If light bulb A has a current of 10 amps running through it what is the current in light bulb B?
Follows • 1
Expert Answers •2

03/01/20

find the tension
hree masses are connected by strings as shown in the attached diagram. Their masses are M1 = 1 kg, M2 = 2 kg, and M3 = 3 kg. The coefficient of friction between the blocks and the surface is... more
Follows • 1
Expert Answers •1

08/18/19

Calculating Density
In determining the density of a rectangular metal bar, a chemist made the following measurements: length, 9.4 cm, width, 3.7 cm, height, 2.4 cm, mass, 45.9 g. Determine the density to the correct... more
Follows • 1
Expert Answers •2

07/19/19

What is the final direction of ball A? What are their two speeds?
Two billiard balls of equal mass move at right angles and meet at the origin of an xy coordinate system. Ball A is moving upward along the y axis at vA = 2.4 m/s , and ball B is moving to the right... more
Follows • 2
Expert Answers •2

07/17/19

Determine a formula for the acceleration of the system of the two blocks in terms of m1, m2, θ and g. Assume that positive axis is directed down the plane.
A block (mass m1) lying on a frictionless inclined plane is connected to a mass m2 by a massless cord passing over a pulley, as shown in the figure. The answer that I got was a = [g(m2 - m1(sin... more
Follows • 1
Expert Answers •1

07/17/19

Electromagnetism

Two metal plates are squares of 12 cm by 12 cm, separated by 1.0 mm of air. Wires connected to each plate are also connected to a 9.0 V battery. After a long time, the battery is disconnected and... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.